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The following equilibrium was studied by analyzing the equilibrium mixture for the amount of HCl produced.
LaCl3(s) + H2O(g) LaOCl(s) + 2HCl(g)
A vessel whose volume was 1.25 L was filled with 0.0125 mol of lanthanum(III) chloride, LaCl3, and 0.0250 mol H2O. After the mixture came to equilibrium in the closed vessel at 619ºC, the gaseous mixture was removed and dissolved in more water. Sufficient silver (I) ion was added to precipitate the chloride ion completely as silver chloride. If 3.59 g AgCl was obtained, what is the value of Kc at 619ºC?
Assuming that a neutron star has the same density as a neutron, calculate the mass in kilograms of a small piece of a neutron star the size of a spherical pebble with a radius of 0.10 mm.
Calculate the pH of this solution? if we want to lower the pH by one unit of this solution then How many mL of 0.1 M H 3 PO 4 should be added to this solution?
Assuming standard conditions, arrange the following in order of decreasing strength as oxidizing agents in acidic solution
An air bubble was initially trapped in the buret but was dispensed during the back titration of the unreacted HCI. As a result of this technique error, will the reported amount of antacid in the sample be too high or too low? Explain
what is the wavelength of a photon that has three times as much energy as that of a photon whose wavelength is 779 nm.
What is the equilibrium concentration of Cl at 1000 ? What is the equilibrium concentration of COCl2 at 1000 ?
Calculate the Gibbs free energy (in kJ/mol) at 80 degrees celsius. Assuming that the change in enthalpy is negligible over this temperature range
The equilibrium internuclear distance of deuterium iodide, DI, is 160.4 pm, where 1 pm = 1x10-12m. The relevant atomic masses are: mD = 2 amu and mI = 127 amu
Calculate the molar heat of vaporization of a substance given that 0.383 mol of the substance absorbs 24.1 kJ of energy when it is vaporized.
How much of an epoxy that has a "weight per epoxy" of 435 in 80% solid solution is needed for the same reaction?
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant.
Explain what is meant by Chousekeeping gene and why the gene for enolase is not considered a housekeeping gene despite it being expressed in all tissues.
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